挤压油膜阻尼器失效问题分析

刘方杰

挤压油膜阻尼器失效问题分析

刘方杰

北京航空航天大学动力系

基金项目: 航空科学研究基金(94B51089)资助项目

详细信息

中图分类号: V 231.96
计量
- 文章访问数: 2608
- HTML全文浏览量: 201
- PDF下载量: 1662
- 被引次数: 0
出版历程
- 收稿日期: 1997-02-23
- 网络出版日期: 1998-03-31

Analysis Failures on Attenuating Vibration of Squeeze Film Damper

Liu Fangjie

Beijing University of Aeronautics and Astronautics,Dept.of Jet Propulsion

摘要

摘要: 说明了研究挤压油膜阻尼器(简称SFD)减振失效的意义.首先,介绍了国际上研究SFD的J.W.Lund、E.J.Hahn、R.Holmes、R.A.Cookson和E.J.Gunter等五个学术集团,归纳出他们谈论到的有关挤压油膜阻尼器失效的观点,特别着重指出了挤压油膜阻尼器失效的不正确设计.失效的现象是过不了临界和导致转子支承系统产生双稳态特性.避免失效的方法是:调整油膜间隙与不平衡量间的关系,应用全油膜,限制不平衡量和采用弹性支座.本文的结论是:假如设计参数选择不当,挤压油膜阻尼器不仅不能减振,反而会导致转子支承系统工作不稳定或过不了临界.
- 阻尼减振 /
- 弹性阻尼 /
- 失效分析 /
- 挤压油膜阻尼器 /
- 弹支刚度 /
- 油膜间隙
Abstract: The meaning of study the failure of attenuating vibration of the squeeze film damper is detailed.First,the achievement in scientific research accomplished by J.W.Lund,E.J.Hahn,R.Holmes,R.A.Cookson and E.J.Gunter five academic groups for study the squeeze film damper in international is compendiously reviewed．The talks about the failure on attenuating vibration of squeeze film damper for them are concluded．Specially the reasons of failure of squeeze film damper caused by its not proper design are emphalically point out．The phenomena of failure are not going across the critical speed of a rotor,and causing the rotor bearing system to produce a bistable characteristic.The methods to avoid the failure have:to adjust the relationship between the radial clearance and the unbalance,applied the full film,to use flexible bearing housing and limited the unbalance.The conclusion of this paper is if the design parameters are not properly selected is not only unable to attenuate vibration but also cause the operation of rotor system unstable or unable to stride over critical state.
- damping vibration attenuation /
- elastic damping /
- failure analysis /
- squeeze film damper /
- retainer spring stiffness /
- radius clearance

HTML全文

参考文献(1)

1. Cookson R A, Kossa S S. The effectiveness of squeeze-film damper bearings supporting rigid rotors without a centralising spring. Int J Mech Sci,1979,21:639~650 2. Hamburg G, Parkinson J. Gas turbine shaft dynamics.SAE Trans,1962,70: 774~784 3. Lund J W. Stability and damped critical speed of a flexible rotor in fluid film bearing. Trans ASME, Journal of Engineering for Industry,1974,96:509~516 4. Lund J W,Smalley A T,Tecza J A,et al. Squeeze film damper technology:Part I－Predication of finite length damper performance. ASME Paper No.83-GT-247,1983 5. Mohan S, Hahn E J.Design of squeeze film damper support for rigid rotor.Trans ASME,J Engineering for industry,1974,96:976~982 6. Hahn E J.Stability and unbalance response of centrally preload rotor mounted in journal and squeeze film bearings.Trans ASME, J Lubrication Technology, 1979,101:120~128 7. Holmes R.Research note: the nonliner performance of squeeze film bearing.J Mechanical Engineering Science,1972,14:74~77 8. Holmes R.The control of engine vibration using squeeze film damper.Trans ASME, J of Engineering for power,1983,105:525~529 9. Dede M M, Dogan M, Holmes R.The damping capacity of a sealed squeeze film bearing.Trans ASME,J of Tribology,1985,107:411~415 10. Cookson R A, Feng Xinhai.A theoretical investigation of an overhung flexible rotor mounted on uncentralized squeeze film damper bearing and flexible supports. Trans ASME, Series A,1983,105:361~368 11. Gunter E J, Barrett L E, Allaire P E. Stabilization of turbomachinery with squeeze film damper-theory and applications. I mech.E,C233/76,1976 12. Gunter E J, Barrett L E, Allaire P E.Design of nonlinear squeeze-film damper for aircraft engines. Trans ASME, Series F, 1977,99:57~64 13. Barrett L E, Gunter E J, Allaire P E.Optimum bearing and support damping for unbalance response and stability of rotating machinery. Trans ASME, Series A, 1978,100:89~94

施引文献

资源附件(0)

访问统计